Bitcoin will make governments and central banks and other banks honest. (Yea I know this is quite a stretch)
Only if it succeeds.
Of course, if Bitcoin succeeds, it will
topple governments.
There is no aspect of international markets which, in principle, would not be affected by Bitcoin. And because the international markets are the lifeblood of governments (and their wars), practically everything could be affected.
If the Internet was the 'relativity' of communications, then Bitcoin is the 'quantum mechanics' of economics.